11/09/2026
How anti-wrinkle treatment works, the clinical mechanism.
Anti-wrinkle treatments use a purified protein called botulinum toxin. It acts at the junction between nerve and muscle temporarily blocking the signal that tells the muscle to contract. The muscle moves less, so the lines created by that movement soften. The effect is temporary. As the junction recovers, full muscle activity returns.
The result takes around two weeks to reach its full effect. What you see at day two is not the final result. Most people see the clearest outcome at the two-week review.
It addresses dynamic lines, the ones made by muscle movement. Lines at rest, caused by volume loss or skin quality, are a different category requiring different approaches. Understanding which type of line you have is part of what a proper consultation establishes.
Botulinum toxin is a prescription-only medicine. It requires a prescriber to assess whether it is appropriate for your specific situation, not just someone with injection training.